Reply To: How much?
Until you get used to them be careful walking down stairs, and things like reaching for a glass of water on a table.Varifocals can totally screw up your ability to judge distances accurately!
They warned me about the distance judgement issue and I found out first hand when I nearly dumped a Guinness all over myself in the Legion! Very strange for the first few hours.
I was also warned not to drive in them for at least a week.